Dust collecting apparatus



July 5, 1938. H. H. BUBAR 2,

I I DUST COLLECTING APPARATUS Filed June 8, 1937 Patented July 5, 1938 UNI-TED STATES PATENT. OFFICE 10 Claims.

'My present invention relates to the art of dust collecting and has particular reference to the construction and operation of dust collecting apparatus.

6 The principal object of my invention is to provide ah eflicient dust collector capable of col lecting both heavy and fine dust. It is a further object of my invention to provide a dust collector which has a very low draft loss, and which may 10 therefore be used with minimum fan power requirements or with natural draft equipment.

It is an additional object of my invention to provide a rust collector which. is not subject to abrasion of the collector elements, and which has no moving parts.

Another object of my invention is to provide a relatively light weight dust collector which occupies a small amount of space, whereby the dust collecting apparatus may be readily installed in 20 cramped quarters such as are ordinarily available in city power plants.

With the above and other objects and advantageous features in view, my invention consists of a novel apparatus more fully disclosed in the de- 25 tailed description following, in conjunction with the accompanying drawing, and more specificallydeflned in the claims appended thereto.

In the drawing:

Fig. 1 is a vertical central section of the novel .30 dust collector;

Fig. 2 is a section on the line 2-2 thereof, parts being broken away, and

Fig. 3 is a section on the line 3-4 of Fig. 1; Referring to the drawing, the novel dust col- 35 lecting apparatus comprises a vertical housing Ill, preferably of rectangular form, and divided by vertical spaced partitions ll into a plurality of separate flow chambers l2 communicating at their upper ends with a common inlet chamber 40 I3. Each flow chamber has a plurality of funnel shaped collectors l4, each collector being position at the apex of a deflector unit consisting of a plurality of spaced deflectors l5 arranged in' downwardly pointing V shape, each collector I4 45 having an enlarged upper portion l6 and a narrow lower portion I! which seats within the upper portion I6 of the collector positioned'thereunder. The partitions H, see Fig. 1, terminate just above the last row of collectors and suitable openings l8 are provided in the sides of the housing .to permit free outlet of cleaned gases. Angle plates i9-are provided at the lower end of the housing I0, and form the top of a dust receiver 20, preferably of inverted pyramid form, which J55 has an operable trap door 2| at its apex to permit removal of collected dust. Vertical partitions 22 depending from the plate l9 are provided to divide the dust receiving chamber into a plurality of separate chambers, these partitions being perforated as indicated in Fig. 2 to break 3 up the gas streams. As will be noted from Figs.

1 and 3, the plates I! are spaced to receive the lower ends of the bottom collectors I therethrough, and openings 23 are provided between said collectors, whereby gas passing through the collectors with the entrained dust may escape upwardly to join the air exiting through the outlets IU.

Referring now to Fig. 1, the deflectors l5 are preferably formed of angle bars which are dis- 1 placed laterally and vertically so as to form V shaped guide passages for the gas, and to converge into the upper portion l6 of the dust collectors, the gas being free to flow between the deflector units, but being constrained to follow a tortuous path as indicated by the arrows whereby the dust particles in the gas will separate by gravity and by deflection and enter into the collectors I4. Dust laden gas which enters into the inlet I3 'is thus divided in a plurality of 25 separate streams, each stream passing serially through the sets of deflectors IS, the purified gas entering into the lower chamber below the partitions H and exiting through the openings ll: any gas which passes downwardly through the collectors H with the entrained dust flows into the dust receiver 20 and has its velocity broken by the perforations in the partitions 22, the gas then rising upwardly through the openings 23 to rejoin the main purified gas which has passed through the separate flow passageways.

It is thus evident that the novel dust collecting apparatus consists of an upright housing which receives dust laden gas, divides the dust laden gas into a plurality of separate streams, cleans 40 each separate stream serially by gravity and by deflection, and permits the cleaned gas to exit at the lower portion of the apparatus. Although specific angle bars of generally V shape have been disclosed, it is obvious that any type of deflector plate maybe used, for guiding the gas flow between adjacent plates upwardly and then downwardly so as to produce deflector separation by sharp turning of the gas currents, aided by gravi ty separation. The device is easily manufactured, uses a small number of readily assembled parts, interposes very little draft load, and is of relatively light weight. Moreover, the collector apparatus may be made of any size and may be readily changed to meet additional loads, as the addition of one or more collectors is a relatively simple procedure.

The above described apparatus has been found to have a high collection efficiency; for example, this type of apparatus has obtained 80% to 85% recovery of all ash entering the apparatus and resulting from the combustion of pulverized fuel or other extremely light and flne dust.

While I have described a specific constructional embodiment of my invention, it is obvious that changes in the number and relative amount of the parts and in the type of deflectors and of funnel collectors used, may be made to suit the requirements for different dust collecting operations, without departing from the spirit and the scope of the invention as defined in the appended claims.

I claim:

1. A housing having a dust receiving chamber .anda deflector unit, the top of said deflector unit being spaced from the top of said housing to provide an inlet chamber communicating with an inlet in the top of said housing and the bottom of said deflector unit being spaced from said dust receiving chamber ta provide an outlet chamber communicating with an outlet in the side of said housing, said deflector unit comprising a spaced series cf deflector elements arranged in V-shape and collector funnel means at the apex of said deflector unit, said collector funnel means extending through said outlet chamber and into said dust receiving chamber.

2. A housing having a dust receiving chamber and a deflector unit, the top of said deflector unit being spaced from the top of said housing to provide an inlet chamber communicating with an inlet in the top cf said housing and the bottom of said deflector unit being spaced from said dust receiving chamber to provide an outlet chamber communicating with an outlet in the side cf said hcusing, said, deflector unit comprising a spaced series of deflector elements arranged in V-shape and collector funnel means at the apex of said deflector unit, said collector funnel means ex tending through said outlet chamber and into said dust receiving chamber, said dust receiving chamber having a vent communicating with said outlet chamber to permit gas entering through said funnel means to return to said outlet chamier.

3. A housing having a dust receiving chamber and a plurality of deflector units, said deflector units being spaced from the top of said housing to provide an inlet chamber communicating with an inlet in the tsp of said housing and said deflector units being spaced from said dust receiving chamber to provide an outlet chamber communicating with an outlet in the side of said housing, said deflector units being arranged in series and each comprising a spaced series of deflector elements arranged in V=shape and collector funnel means at the apex of each deflector unit, the last collector funnel means extending through said outlet chamber and into said dust receiving chamber.

4. A housing having a dust receiving chamber and a plurality of deflector units, said deflector units being spaced from the top of said housing to provide an iniet chamber communicating with an inlet in the top of said housing and said deflector units being spaced from said dust receiving chamber to provide an outlet chamber communicating with an outlet in the side of said housing, said deflector units being arranged in series and each comprising a spaced series of deflector elements arranged in V-shape and collector iunnelmeans at the apex of each deflector unit, the last collector funnel means extending through said outlet chamber and into said dust receiving chamber, said dust receiving chamber having a vent communicating with said outlet chamber to permit gas entering through said funa spaced series of deflector elements arranged inv v-shape and collector tunnel means at the apex of said deflector unit, said collector funnel means extending through said outlet chamber and into said dust receiving chamber.

6. A housing having a dust receiving chamber and partitions dividing said housing into parallel flow chambers each having a deflector unit, said partitions being spaced from the top of said housing to provide an inlet chamber communicating with an inlet in the top of said housing and said partitions being spaced from said dust receiving chamber to provide an outlet chamber communicating with an outlet in the side of said housing, each of said deflector units comprising a spaced series of deflector elements arranged in V-shape and collector funnel means at the apex of said deflector unit, said collector funnel means extending thrcugh said outlet chamber and into said dust receiving chamber, said dust receiving chamber having a vent communicating with said outlet chamber to permit gas entering through said funnel means to return to said out et chamber.

7. A housing having a dust receiving chamber and partitions dividing said housing into parallel flow chambers each having a plurality of deflector units arranged in series, said partitions being spaced from the top of said housing to provide an inlet chamber communicating with an inlet in the top of said housing and said partitions be= ing spaced from said dust receiving chamber to provide an outlet chamber communicating with an outlet in the side of said housing, each'oi said deflector units comprising a spaced series of de flector elements arranged in V-shape and collector funnel means at the apex of each deflecter unit, the last collector funnel means extending through said outlet chamber and into said dust receiving chamber.

8. A housing having a dust receiving chamber and partitions dividing said housing into parallel flow chambers each having a plurality of deflector units arranged in series, said partitions being spaced from the top of said housing to provide an inlet chamber communicating with an inlet in the top of said housing and said partiticns being spaced from said dust receiving chamber to provide an outlet chamber communicating with an outlet in the side of said hcusing, each of said deflector units comprising a spaced series of deflector elements arranged in V-shape and collector funnel means at the apex of each deflector unit, the last collector funnel means extending through said outlet chamber and into said dust receiving chamber, said dust receiving chamber having a vent communicating with said outlet chamber to permit gas entering through said funnel means to return to said outlet chamber.

9. A housing having a dust receiving chamber and partitions dividing said housing into parallel flow chambers each having a deflector unit; said partitions being spaced from the top 01' said housing to provide an inlet chamber communicating with an inlet in the top of said housing and said partitions being spaced from said dust receiving chamber to provide an outlet chamber communicating with an outlet in the side of said housing, each of said deflector units comprising a spaced series of deflector elements arranged in V-shape and collector funnel means at the apex of said deflector unit, said collector funnel means extending through said outlet chamber and into said dust receiving chamber, said dust receiving chamber having partitions dividing the dust receiving chamber into parallel collecting chambers aligned with the parallel flow chambers.

10. A housing having a dust receiving chamber and partitions dividing said housing into parallel flow chambers each having a plurality of deflector units arranged in series, said partitions being spaced from the top of said housing to provide an inlet chamber communicating with an inlet in the top of said housing and said partitions being spaced from said dust receiving chamber to provide an outlet chamber communicating with an outlet in the side of said housing, each of said deflector units comprising a spaced series of deflector elements arranged in V-shape and collector tunnel means at the apex of each deflector unit, the last collector funnel means extending through said outlet chamber and into said dust receiving chamber.

HUDSON H. BUBAR. 

